Digestion Worksheet - Mr. I's Biology Resource page!!
Waves of muscle contractions called _____ forces food down the esophagus. ESPOPHAGUS. At the ____ of the esophagus, a _____ ring called the _____sphincter allows food to enter the stomach and then squeezes shut to keep food or fluid from flowing back up into the esophagus. STOMACH. Stomach- receives food, mixes it with _____ juices, carries on ... ................
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